Three United States Mint Proof Sets, 1987, 1990 & 1991
Updated August 6, 2026
| Lot number | 0634 |
| Estimate | $50 - $100 |
| Opening bid | $25 |
| Auction | HIGH-END ANTIQUES, FASHION, ART & More! |
| Date | August 11, 2026 at 6:00 PM EDT |
| Auction house | COAUCTION |
| Location | Lake Bluff, Illinois |
Collection of three official United States Mint proof coin sets dated 1987, 1990, and 1991. Each set includes proof-strike U.S. coinage housed in original government-issued plastic holders with
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